"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : autocommit
Case Name   : 关闭自动提交后，执行truncate，回滚/提交，在另一个会话中查询
Create At   : 2023/01/17
@zou_jialiang0501162244
Description :
    1、兼容B库建表
    2、开启会话1连接B库，关闭自动提交，truncate空表，等会话2执行插入数据后，
       再次truncate表，提交，表中插入数据，truncate表后回滚，查询数据
    3、开启会话2，表中插入数据，会话1提交后查询
    4、清理环境
Expect      :
    1、成功
    2、执行成功，100000、9999
    3、查询为0
    4、成功
History     :
"""

import os
import time
import unittest

from testcase.utils.Logger import Logger
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.ComThread import ComThread


class TestAutocommit(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.tb_name = 't_autocommit_0034'
        self.db_name = 'db_autocommit_0034'
        self.log.info("-----预置兼容B库-----")
        preset_db = f"drop database if exists {self.db_name};" \
                    f"create database {self.db_name} dbcompatibility 'B';"
        preset_db_res = self.pri_sh.execut_db_sql(preset_db)
        self.log.info(preset_db_res)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS, preset_db_res,
                      f"创建兼容B库失败")

    def test_autocommit(self):
        text1 = '-----step1:兼容B库建表并插入数据;expect:成功-----'
        self.log.info(text1)
        preset_tb = f"drop table if exists {self.tb_name};" \
                    f"create table {self.tb_name}(" \
                    f"c_id int primary key, c_char char(20) not null);"
        preset_res = self.pri_sh.execut_db_sql(preset_tb, dbname=self.db_name)
        self.log.info(preset_tb)
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS, preset_res,
                      f"建表失败: {text1}")

        text2 = '-----step2:开启会话1连接B库，关闭自动提交，truncate空表，' \
                '等会话2执行插入数据后，再次truncate表，提交，表中插入数据，' \
                'truncate表后回滚，查询数据;expect:执行成功，100000、9999-----'
        self.log.info(text2)
        sql1 = f"set autocommit to off;" \
               f"truncate {self.tb_name}; end;" \
               f"select pg_sleep(3);" \
               f"select count(*) from {self.tb_name};" \
               f"truncate {self.tb_name};" \
               f"select pg_sleep(3);" \
               f"commit;" \
               f"insert into {self.tb_name} values(generate_series(1,9999)," \
               f" 'char' || generate_series(1,9999)); commit work;" \
               f"truncate {self.tb_name}; rollback;" \
               f"select count(*) from {self.tb_name};"
        session1 = ComThread(self.pri_sh.execut_db_sql,
                             args=(sql1, '', self.db_name))
        session1.setDaemon(True)

        text3 = '-----step3:开启会话2，表中插入数据，会话1提交后查询;' \
                'expect:查询为0-----'
        self.log.info(text3)
        sql2 = f"insert into {self.tb_name} values(" \
               f"generate_series(1,100000), " \
               f"'char' || generate_series(1,100000));" \
               f"select pg_sleep(3);" \
               f"select count(*) from {self.tb_name};"
        session2 = ComThread(self.pri_sh.execut_db_sql,
                             args=(sql2, '', self.db_name))
        session2.setDaemon(True)
        # 先后启动线程，间隔1s
        session1.start()
        time.sleep(1)
        session2.start()
        session1.join(10)
        session2.join(10)
        result1 = session1.get_result()
        self.log.info(f'session1_results:\n {result1}')
        result2 = session2.get_result()
        self.log.info(f'session2_results:\n {result2}')
        self.assertIn('SET', result1, f"关闭自动提交失败: {text2}")
        self.assertEqual(result1.count(self.constant.TRUNCATE_SUCCESS_MSG), 3,
                         f"执行失败: {text2}")
        self.assertIn('100000', result1, f"执行失败: {text2}")
        self.assertIn(self.constant.INSERT_SUCCESS_MSG, result1,
                      f"insert失败: {text2}")
        self.assertEqual(result1.count(self.constant.COMMIT_SUCCESS_MSG), 3,
                         f"执行失败: {text2}")
        self.assertIn(self.constant.ROLLBACK_MSG, result1, f"执行失败: {text2}")
        self.assertIn('9999', result1.splitlines()[-2], f"执行失败: {text2}")
        self.assertIn(self.constant.INSERT_SUCCESS_MSG, result2,
                      f"insert失败: {text3}")
        self.assertEqual(result2.splitlines()[-2].strip(), '0',
                         f"执行失败: {text3}")

    def tearDown(self):
        text4 = '-----step4:清理环境 expect:成功-----'
        self.log.info(text4)
        drop_db_res = self.pri_sh.execut_db_sql(
            f"drop database if exists {self.db_name};")
        self.log.info(drop_db_res)
        self.assertIn(self.constant.DROP_DATABASE_SUCCESS, drop_db_res,
                      f"执行失败: {text4}")
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
